Carnage Blast

Chose one creature you can see that is within range which has some sort of blood. Thick, hot blood issues forth from your hand, striking the target.Make a spell attack roll against that creature. On a hit, the target takes 3d10 necrotic damage. 

If this damage reduces the target to 0 hit points, its blood bursts from within its body, spraying nearby foes with gore. Each creature within 15 feet of the target must make a Dexterity saving throw. On a failed saving throw, a creature takes 3d10 necrotic damage.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage dealt increases by 1d10 for each slot level above 2nd.